Battery Grapher graphs your historical battery levels and learns your habits to make smart predictions on what your future battery levels will be. Developed specifically with energy consumption in mind, Battery Grapher has almost no impact on battery life.
SMART PREDICTIONS
Battery Grapher uses historical battery levels to intelligently predict what your battery level will be throughout the rest of the day, allowing you to plan when to next charge your device. The longer you have Battery Grapher installed, the more accurate future battery level predictions will be.
LOW ENERGY CONSUMPTION
Battery Grapher is made for people who want to extend the battery life, meaning that low energy usage is a priority. The app runs a background task only once an hour, and doesn't require a network connection, which keeps energy consumption extremely low.
CUSTOMIZABLE NOTIFICATIONS
Battery Grapher allows you to set notifications that fit your needs. You can get the app to notify you when you battery drops below a preset percentage, or if you only have a certain number of hours left before your battery runs out. (currently only available on watchOS)
ALL COMPLICATIONS & WIDGET SIZES SUPPORTED
Battery Grapher supports all complications & widget sizes. Complications can show hours before needing to charge, or battery %. Both complications and widgets are customizable from within the app.
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User Rating
4.08 out of 5
26 ratings
in Canada
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Ratings History
Reviews
Amazing App, Mandatory on all my devices
The app is so easy to use and setup, and so accurate. I’ve had it give me as little as 5 minutes warning, allowing me to get full use out of my battery. It’s super accurate and reduces how much I need to charge my devices. I have this as a default app on my watch and iPhone.
Apple Watch Ultra Support
I didn’t have an issue with the Series 4 or 6 watches but upgrading the Series 6 to the Ultra, if you have a complication and you set it for 54 hours off the charger, the hours to go until it’s depleted never goes past 47. For this watch, this needs to be fixed.
Update: With the version that was released on 01/31/23, it fixes the bug (as in the Release Notes) that caused this. It now displays the proper hours until zero in the complication (goes past 47 on the “Hours until Zero”). All around I’m very happy with the app on an iPhone, an iPad and an Apple Watch.
Poor accuracy on watch
This app works well on IPhone but is very inaccurate on the Apple Watch. It overestimates how long the battery will last by at least one day. It does not trigger the alarms I have set at 40% and 20%. It has not improved its accuracy in several weeks (currently says ‘bad’). Two emails to the developer have not been answered.
Clean and barebones
It does one thing and does it really well. However instead of basing the estimation on time until the battery is absolutely dead, it would be extremely helpful to be able to estimate the time before it reaches 20% or such. There is also a display issue, where the text would be partially cut off if the complication is placed at the bottom left or right of the watch face. Perhaps showing H or plain number instead of HRS. can prevent it?
Impressive
Very impressed so far with the ability to see how many hours of battery I have left on my watch with just a glance at the complication.
Disappointed
It stays at 73% no matter how charged it is. Doesn’t warn that it’s at the levels I’ve set. I’ve had it about 2 weeks.
The Developer reached out to me and gave me a solution to my problem and it appears to be working. Thank you
Developer-I've repeatedly done as you suggested. The App is reset and it seems to work for a while then it doesn't. I've just recharged it to 100% The App shows 68% It also periodically stays at a set figure for a long time then drops.
Was waiting for this but ...
It hasn't sent me the "lower than 40%" notification I programmed and I can't find a way to reach the programmer to ask questions
Very cool app
Fills a niche on the Apple Watch App Store. Exactly what I was looking for 👍🏻